# (5)!
COPY ./app /code/app

# (6)!
CMD ["fastapi", "run", "app/main.py", "--port", "80"]
```

1. Comenzar desde la imagen base oficial de Python.

2. Establecer el directorio de trabajo actual a `/code`.

    Aquí es donde pondremos el archivo `requirements.txt` y el directorio `app`.

3. Copiar el archivo con los requisitos al directorio `/code`.

    operator fun next(): Route {
      if (!hasNext()) throw NoSuchElementException()
      return routes[nextRouteIndex++]
    }
  }

  companion object {
    /** Obtain a host string containing either an actual host name or a numeric IP address. */
    val InetSocketAddress.socketHost: String get() {
      // The InetSocketAddress was specified with a string (either a numeric IP or a host name). If

 * @since 2.0
 */
@GwtCompatible
public abstract class ForwardingSet<E extends @Nullable Object> extends ForwardingCollection<E>
    implements Set<E> {
  // TODO(lowasser): identify places where thread safety is actually lost

  /** Constructor for use by subclasses. */
  protected ForwardingSet() {}

  @Override
  protected abstract Set<E> delegate();

  @Override
  public boolean equals(@Nullable Object object) {

 * {@link #enqueue} and {@link #dispatch} are 2 different methods. It is expected that the decision
 * to run a particular event is made during the state change, but the decision to actually invoke
 * the listeners can be delayed slightly so that locks can be dropped. Also, because {@link
 * #dispatch} is expected to be called concurrently, it is idempotent.
 */
@J2ktIncompatible
@GwtIncompatible

`Header` is a "sister" class of `Path`, `Query` and `Cookie`. It also inherits from the same common `Param` class.

But remember that when you import `Query`, `Path`, `Header`, and others from `fastapi`, those are actually functions that return special classes.

///

/// info

To declare headers, you need to use `Header`, because otherwise the parameters would be interpreted as query parameters.

///

        readFully(bytes);
        return new SID(bytes, 0);
    }

    /**
     * Skips the specified number of bytes in the stream.
     * @param n the number of bytes to skip
     * @return the actual number of bytes skipped
     * @throws IOException if an I/O error occurs
     */
    public int skipBytes(final int n) throws IOException {
        return this.dis.skipBytes(n);
    }

        v.add(new DERTaggedObject(true, 3, new DERTaggedObject(true, 0, new DERSequence(new ASN1EncodableVector()))));
        ASN1Sequence seq = new DERSequence(v);

        // Act + Assert
        // Note: The actual error will be from ASN1Util.as() trying to cast to ASN1TaggedObject
        assertThrows(PACDecodingException.class, () -> new KerberosApRequest(seq, null));
    }

    @Test

// It returns an error if the decoding failed.
func (e *Erasure) DecodeDataAndParityBlocks(ctx context.Context, data [][]byte) error {
	return e.encoder().Reconstruct(data)
}

// ShardSize - returns actual shared size from erasure blockSize.
func (e *Erasure) ShardSize() int64 {
	return ceilFrac(e.blockSize, int64(e.dataBlocks))
}

// ShardFileSize - returns final erasure size from original size.

  @MapFeature.Require({SUPPORTS_PUT, SUPPORTS_REMOVE, ALLOWS_NULL_VALUES})
  @CollectionSize.Require(absent = ZERO)
  public void testCompute_presentNullToNull() {
    // The spec is somewhat ambiguous about this case, but the actual default implementation
    // in Map will remove a present null.
    initMapWithNullValue();
    assertNull(
        "Map.compute(presentMappedToNull, functionReturningNull) should return null",
        getMap()

     * @throws InstantiationRuntimeException
     *             If the underlying constructor represents an abstract class
     * @throws IllegalAccessRuntimeException
     *             If the number of actual and formal parameters differ, if unwrapping of primitive arguments fails,
     *             or if after unwrapping, the parameter values cannot be converted to the corresponding formal parameter types,